A neuron normally fires when A) its sodium-potassium pumps are ...

[Lobcity]

A neuron normally fires when
 
  A) its sodium-potassium pumps are stimulated.
  B) there is an EPSP.
  C) there is an IPSP.
  D) the degree of depolarization on the axon adjacent to the hillock exceeds the threshold of excitation.
  E) its buttons are stimulated.

Question 2

Action potentials originate at the
 
  A) terminal buttons.
  B) synapses.
  C) axon initial segment, adjacent to the axon hillock
  D) nodes of Ranvier.
  E) nucleus.

[s.meritte]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: C

[Lobcity]

Thanks for the timely response, appreciate it

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